<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
index
<br/>
<form th:action="@{/logout}" method="post">
    <p><input type="submit" value="注销"/></p>
</form>
</body>
</html>